iwlwifi: move the shrd memory from priv

Allocating the shrd area dynamically will allow more agility
while revamping the flows.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>

drivers/net/wireless/iwlwifi/iwl-agn.c

@@ -1780,9 +1780,7 @@ int iwl_probe(struct iwl_bus *bus, const struct iwl_trans_ops *trans_ops,
 	}
 
 	priv = hw->priv;
-	priv->shrd = &priv->_shrd;
-	bus->shrd = priv->shrd;
-	priv->shrd->bus = bus;
+	priv->shrd = bus->shrd;
 	priv->shrd->priv = priv;
 
 	priv->shrd->trans = trans_ops->alloc(priv->shrd);

drivers/net/wireless/iwlwifi/iwl-dev.h

@@ -821,7 +821,6 @@ struct iwl_wipan_noa_data {
 struct iwl_priv {
 
 	/*data shared among all the driver's layers */
-	struct iwl_shared _shrd;
 	struct iwl_shared *shrd;
 
 	/* ieee device used by generic ieee processing code */

drivers/net/wireless/iwlwifi/iwl-pci.c

@@ -374,10 +374,18 @@ static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 	if (!bus) {
 		dev_printk(KERN_ERR, &pdev->dev,
 			   "Couldn't allocate iwl_pci_bus");
+		return -ENOMEM;
+	}
+
+	bus->shrd = kzalloc(sizeof(*bus->shrd), GFP_KERNEL);
+	if (!bus->shrd) {
+		dev_printk(KERN_ERR, &pdev->dev,
+			   "Couldn't allocate iwl_shared");
 		err = -ENOMEM;
 		goto out_no_pci;
 	}
 
+	bus->shrd->bus = bus;
 	pci_bus = IWL_BUS_GET_PCI_BUS(bus);
 	pci_bus->pci_dev = pdev;
 
@@ -472,6 +480,7 @@ static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 out_pci_disable_device:
 	pci_disable_device(pdev);
 out_no_pci:
+	kfree(bus->shrd);
 	kfree(bus);
 	return err;
 }
@@ -491,6 +500,7 @@ static void __devexit iwl_pci_remove(struct pci_dev *pdev)
 	pci_disable_device(pci_dev);
 	pci_set_drvdata(pci_dev, NULL);
 
+	kfree(bus->shrd);
 	kfree(bus);
 }